Chrysanthemum plant named ‘Yolust’

ABSTRACT

A new and distinct cultivar of  Chrysanthemum  plant named ‘Yolust’, characterized by its upright plant habit; dark green-colored foliage; freely and uniformly flowering habit; large daisy-type inflorescences; attractive purple-colored ray florets; strong and thick peduncles; and good postproduction longevity.

Botanical designation: Chrysanthemum×morifolium.

Cultivar denomination: ‘Yolust’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Chrysanthemum plant, botanically known as Chrysanthemum×morifolium, commercially grown as a cut flower and hereinafter referred to by the name ‘Yolust’.

The new Chrysanthemum is a product of a planned breeding program conducted by the Inventor in Salinas, Calif. and Bogota, Colombia. The objective of the program is to create and develop new cut Chrysanthemum cultivars having numerous inflorescences with strong peduncles, good form and substance, attractive floret coloration and good postproduction longevity.

The new Chrysanthemum originated from a cross-pollination made by the Inventor in December, 2000, in Salinas, Calif. of a proprietary selection of Chrysanthemum×morifolium identified as code number T2798, not patented, as the female, or seed, parent with the Chrysanthemum×morifolium cultivar Joker, disclosed in U.S. Plant Pat. No. 14,560, as the male, or pollen, parent. The new Chrysanthemum was discovered and selected by the Inventor as a single flowering plant within the progeny of the stated cross-pollination in a controlled environment in Bogota, Colombia in March, 2002. The selection of this plant was based on its strong peduncles, desirable ray floret color, good inflorescence form and substance and good postproduction longevity.

Asexual reproduction of the new Chrysanthemum by terminal cuttings in a controlled environment in Bogota, Colombia since May, 2002, has shown that the unique features of this new Chrysanthemum are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the cultivar Yolust have not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment such as temperature, daylength and light intensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Yolust’. These characteristics in combination distinguish ‘Yolust’ as a new and distinct cultivar of Chrysanthemum:

-   -   1. Upright plant habit.     -   2. Dark green-colored foliage.     -   3. Freely and uniformly flowering habit.     -   4. Large daisy-type inflorescences that are about 8.5 cm in         diameter.     -   5. Attractive purple-colored ray florets.     -   6. Response time about 65 days.     -   7. Strong and thick peduncles.     -   8. Good postproduction longevity with inflorescences and foliage         maintaining good substance and color for about two weeks in an         interior environment.

Plants of the new Chrysanthemum differ from plants of the female parent selection in the following characteristics:

-   -   1. Plants of the new Chrysanthemum are shorter than plants of         the female parent selection.     -   2. Plants of the new Chrysanthemum flower about three to five         days later than plants of the female parent selection.     -   3. Inflorescences of plants of the new Chrysanthemum have         purple-colored ray florets whereas inflorescences of plants of         the female parent selection have pink-colored ray florets.

Plants of the new Chrysanthemum differ from plants of the male parent, the cultivar Joker, in the following characteristics:

-   -   1. Plants of the new Chrysanthemum have stronger and heavier         flowering stems than plants of the cultivar Joker.     -   2. Plants of the new Chrysanthemum flower about four to five         days earlier than plants of the cultivar Joker.     -   3. Inflorescences of plants of the new Chrysanthemum have         purple-colored ray florets whereas inflorescences of plants of         the cultivar Joker have red-colored ray florets.

Plants of the new Chrysanthemum can be compared to plants of the Chrysanthemum cultivar Balsas, disclosed in U.S. Plant Pat. No. 15,331. In side-by-side comparisons conducted in Bogota, Colombia, plants of the new Chrysanthemum differed from plants of the cultivar Balsas in the following characteristics:

-   -   1. Plants of the new Chrysanthemum had stronger and heavier         flowering stems than plants of the cultivar Balsas.     -   2. Plants of the new Chrysanthemum flowered about three to four         days later than plants of the cultivar Balsas.     -   3. Plants of the new Chrysanthemum produced fewer inflorescences         per flowering stem than plants of the cultivar Balsas.     -   4. Plants of the new Chrysanthemum had larger inflorescences         than plants of the cultivar Balsas.     -   5. Plants of the new Chrysanthemum had longer peduncles than         plants of the cultivar Balsas.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs illustrate the overall appearance of the new Chrysanthemum. These photographs show the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Chrysanthemum.

The photograph on the first sheet comprises a side perspective view of a typical flowering stem of ‘Yolust’.

The photograph on the second sheet is a close-up view of typical inflorescences of ‘Yolust’.

DETAILED BOTANICAL DESCRIPTION

In the following description, color references are made to The Royal Horticultural Society Colour Chart, 1995 Edition, except where general terms of ordinary dictionary significance are used. The aforementioned photographs and following observations and measurements describe plants grown in Bogota, Colombia during the summer and autumn in a polyethylene-covered greenhouse and under conditions and practices which approximate those generally used in commercial Chrysanthemum production. During the production of the cut flowers, day temperatures ranged from 20° C. to 25° C., night temperatures ranged from 4° C. to 9° C. and light levels ranged from 3,000 to 4,000 foot-candles. Measurements and numerical values represent averages for typical flowering plants. The photographs and measurements were taken from flowering stems of plants that were about three months old.

-   Botanical classification: Chrysanthemum×morifolium cultivar Yolust. -   Parentage:     -   -   Female, or seed, parent.—Proprietary selection of             Chrysanthemum×morifolium identified as code number T2798,             not patented.         -   Male, or pollen, parent.—Chrysanthemum×morifolium cultivar             Joker, disclosed in U.S. Plant Pat. No. 14,560. -   Propagation:     -   -   Type.—Terminal vegetative cuttings.         -   Time to initiate roots.—About 10 to 14 days with soil             temperatures of about 18° C. to 21° C.         -   Root description.—Fine, fibrous; white in color.         -   Rooting habit.—Freely branching. -   Plant description:     -   -   Appearance.—Herbaceous daisy-type cut flower.         -   Flowering stem description.—Aspect: Erect. Length: About             102 cm. Spray diameter: About 16.5 cm. Stem diameter: About             8.5 mm. Internode length: About 3.5 cm. Texture: Pubescent;             longitudinally ridged. Color: Close to 146A.         -   Foliage description.—Arrangement: Alternate; simple. Length:             About 8.75 cm. Width: About 5.9 cm. Apex: Cuspidate. Base:             Truncate. Margin: Palmately lobed; irregularly serrate;             sinuses parallel to slightly divergent. Texture, upper and             lower surfaces: Pubescent; veins prominent on lower surface.             Color: Developing and fully expanded foliage, upper surface:             Close to 147A; venation, close to 147B. Developing and fully             expanded foliage, lower surface: Close to 147B; venation,             close to 147B. Petiole: Length: About 1.9 cm. Diameter:             About 5 mm. Texture, upper and lower surfaces: Pubescent.             Color, upper surface: Center, close to 147B; towards the             margins, close to 147A. Color, lower surface: 147B to 147C. -   Inflorescence description:     -   -   Appearance.—Daisy-type inflorescence form with elongated             oblong-shaped ray florets. Inflorescences borne on             terminals, arising from leaf axils. Ray and disc florets             develop acropetally on a capitulum. Uniform flowering habit.         -   Fragrance.—Moderate; spicy.         -   Flowering response.—Under natural conditions, plant flower             in the autumn/winter in the Northern Hemisphere. At other             times of the year, inflorescence initiation and development             can be induced under short day/long night conditions (at             least 13.5 hours of darkness). Plants exposed to two weeks             of long day/short night conditions after planting followed             by photoinductive short day/long night conditions flower             about 65 days later.         -   Postproduction longevity.—In an interior environment,             inflorescences and foliage will maintain good color and             substance for about two weeks in an interior environment.         -   Quantity of inflorescences.—Freely flowering habit, about             six inflorescences per stem develop.         -   Inflorescence size.—Diameter: About 8.5 cm. Depth (height):             About 1.6 cm. Disc diameter: About 2.2 cm. Receptacle             diameter: About 1 cm. Receptacle height: About 9 mm.         -   Inflorescence buds.—Shape: Oblate. Height: About 2 cm.             Diameter: About 1.5 cm. Color: More green than 147A.         -   Ray florets.—Shape: Elongated oblong. Surface: Concave to             flat; eventually reflexing. Aspect: Initially incurved, with             development, perpendicular to peduncle axis. Length: About             4.1 cm. Width: About 1.3 cm. Apex: Acute to emarginate.             Base: Fused. Corolla tube length: About 6 mm. Corolla tube             diameter, at base: About 2 mm. Texture: Smooth, glabrous;             velvety; longitudinally ridged. Number of ray florets per             inflorescence: About 42 arranged in about three whorls.             Color: When opening and fully opened, upper surface: Close             to 155D heavily overlain with close to 72A. When opening and             fully opened, lower surface: Close to 155D underlain with             close to 77A.         -   Disc florets.—Shape: Tubular, elongated; typically             five-parted. Length: About 7 mm. Diameter, apex: About 2 mm.             Diameter, base: About 1 mm. Texture, outer and inner             surfaces: Smooth, glabrous. Number of disc florets per             inflorescence: About 321 in numerous whorls. Color,             immature, outer and inner surfaces: Apex: Close to 154A.             Mid-section and base: Close to 155D. Color, mature, outer             and inner surfaces: Apex: Close to 9A. Mid-section: Close to             151D. Base: Close to 155D.         -   Phyllaries.—Quantity per inflorescence/arrangement: About 24             arranged in about three whorls. Length: About 9 mm. Width:             About 4 mm. Shape: Lanceolate. Apex: Acute. Base: Truncate.             Margin: Entire. Texture, upper surface: Smooth, glabrous.             Texture, lower surface: Pubescent. Color, upper surface:             Close to 143A. Color, lower surface: More green than 147A.         -   Peduncles.—Length, terminal peduncle: About 10.75 cm.             Length, fourth peduncle: About 15.75 cm. Diameter, terminal             peduncle: About 4 mm. Angle: About 30° to 45° from vertical.             Strength: Strong. Texture: Pubescent; longitudinally ridged.             Color: Close to 146A.         -   Reproductive organs.—Androecium: Filament length: About             6 mm. Filament color: Close to 154D. Anther length: Less             than 1 mm. Anther shape: Narrowly oblong. Anther color:             Close to 9A. Pollen amount: None observed. Gynoecium: Pistil             length: About 7 mm. Stigma shape: Bi-parted. Stigma color:             Close to 9A. Style length: About 5 mm. Style color: Close to             154D. Ovary color: Close to 157A.         -   Seed/fruit.—Seed and fruit production has not been observed. -   Diseases/pest resistance: Resistance to pathogens and pests common     to Chrysanthemums has not been observed on plants grown under     commercial conditions. -   Temperature tolerance: Plants of the new Chrysanthemum have     demonstrated good tolerance to low temperatures of about 4° C. and     high temperatures of about 35° C. 

1. A new and distinct Chrysanthemum plant named ‘Yolust’ as illustrated and described. 